Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f65af0ad7c943d…

MALICIOUS

PDF

75.7 KB Created: 2021-03-24 16:37:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a8cf92738c7a162ccd008b2bdfb80650 SHA-1: d825eb2510473b4abefc63d9509deb7209b382aa SHA-256: d6f65af0ad7c943d15e8a5fb224a31f6b89e7a0d294cd3c94cbe0aa8e5c0dd15
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting it is part of an SEO spam or phishing campaign. The document body, though heavily obfuscated, appears to reference a manual, which is a common lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to directing users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xezojetit.ru/wix?keyword=craftsman+315.ch2000+manual PDF link annotation
    • https://jokozoxusatolof.weebly.com/uploads/1/3/1/0/131070378/votazaw_zapewifulabo.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/tozutokapaxofesosu.pdfIn PDF document text
    • http://midakurapujif.mypressonline.com/gutizudikixulugak.pdfIn PDF document text
    • https://ximepovefuvaxoj.weebly.com/uploads/1/3/1/8/131856443/xogidebafigeki-mugesikapunur.pdfIn PDF document text
    • https://xitupiwe.weebly.com/uploads/1/3/4/4/134489196/lajomesax.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/wanerer.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/razikaboviwupamamifu.pdfIn PDF document text
    • https://lupoxever.weebly.com/uploads/1/3/1/4/131413766/4075692.pdfIn PDF document text
    • https://puvukiroleta.weebly.com/uploads/1/3/1/4/131455247/3171531.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dirazonun.myartsonline.com/2609677352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3f7f9b-8950-4c4c-827a-a07fd366bb88/mejowibetozi.pdfIn PDF document text
    • https://6997f972-013f-4c6f-ac95-4179ba17a557.filesusr.com/ugd/549e1a_e69124af276b4567b20f37ddf50ffa99.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/buwosevax/dark_souls_3_4k_xbox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/396e88be-c8f7-4f72-856d-2ec4900bb0e9/dezetudev.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/sat_math_practice_test_2_answers.pdfIn PDF document text
    • https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_4d67d7dccf804d918648ad3f678946a6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/taturi/xitudiloj.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14C 1724 bytes
SHA-256: d2d65a8b04c555ff691869507fe63aecb975aafdb4ac6af5e2f016a013b6e4a3
font_01_sfnt_off0000e9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D8 5672 bytes
SHA-256: 88792cd966d1234671b3297c122633342dc6a598934aa94d46d382d8203e7566
font_02_sfnt_off0000fd05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD05 10696 bytes
SHA-256: 5ccb69f9eea8d31cd81ca9e3772eabb0facce69cb21072bd0f0eca6329269f3f

Open this report in the interactive analyzer, or submit your own file for analysis.